.head {
    width: 100%;
    position: relative;
    line-height: 0.44rem;
    background: #d44439;
    text-align: center;
    color: #fff;
    letter-spacing: 0.03rem;/*可以更改文字间的间距*/
    font-size: 0.16rem;
    z-index: 100;
    .nav{
        width: 0.44rem;
        height: 0.44rem;
        position: absolute;
        left: 0;
        top: 0;
        .iconfont{
            color: #fff;
            font-size: 0.22rem;
        }
    }
    .sou{
        width: 0.44rem;
        height: 0.44rem;
        position: absolute;
        right: 0;
        top: 0;
        .iconfont{
            color: #fff;
            font-size: 0.22rem;
        }
    }
}